Shield tunneling machine main drive sealing grease pressure detection and alarm control system

The utility model relates to a shield tunneling machine main drive sealing grease pressure detection and alarm control system, which comprises a main drive sealing grease pressure source, a pressure sensor, a power supply module, a buzzer, a PLC (Programmable Logic Controller), an interlocking protection controller and an upper computer, a main drive sealing grease pressure source is fed back to a main drive built-in pressure sensor, and the signal output end of the main drive built-in pressure sensor is connected with the input end of an analog input module of the PLC. A communication module output port of the PLC is connected with a communication input port of the upper computer; and the output end of the digital quantity output module of the PLC is connected with the power supply input end of a control relay coil of the buzzer. According to the utility model, real-time detection, abnormal real-time alarm and abnormal overtime protection can be carried out on the main drive sealing grease pressure during sh